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2 results for “refinery” in Mining
Mining · 22 May 2026
The Other Supply Chain: Artisanal Mining and the Mercury Problem
…l one. Remove any of the three and the chain breaks at that link. · Traceability from the refinery end · Downstream, the pressure is real. Refiners face due-diligence expectations, jewellery brands face consumer and regulatory scrutiny, and an accredited refiner risks accreditati…
Amara Okonjo · 12 min read
Mining · 5 August 2026
Grade, Cut-off and the Arithmetic of an Open Pit
…or conventional carbon-in-leach circuits 1–2 yrs Time from ore in the pit to metal at the refinery, including stockpiles · Cut-off grade: where accounting becomes geology · Every tonne coming out of the pit is assigned to one of two destinations. If the value of the recoverable m…
Amara Okonjo · 16 min read
